Company lists · Data refreshed September 2026
Top 16 Prison security system providers based in London, United Kingdom
RevenueBase identified 74 company matches for prison security system providers associated with London, United Kingdom as of September 2026 and tracks 462 professional contacts across them, including 91 with verified work emails and 28 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for prison security system providers associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 13, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 16 largest prison security system providers based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 61 contacts → | ||||
Exact match “WLS (West London Security) has been providing security and solutions to London's homes and businesses for over 40 years.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 2 | 51 contacts → | ||||
Exact match “Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 3 | 13 contacts → | ||||
Exact match “Definitive Security Solutions are an established designer, installer and maintainer of security, CCTV, intruder alarms, access control, power and data, and fire detection systems.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 4 | 10 contacts → | ||||
Exact match “Guarding Professionals is a customer focused security services company providing cost effective advanced security solutions using technical excellence and superior customer…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 5 | 10 contacts → | ||||
Exact match “London-based security company specialising in the design, installation, service and maintenance of single domestic, multi-occupancy residential and commercial security systems.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 6 | 8 contacts → | ||||
Exact match “Our goal is so simple we can sum it up in one word - quality.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 7 | 8 contacts → | ||||
Exact match “We take your security seriously and ensure that you and your property are safe and in secure hands.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 8 | 7 contacts → | ||||
Exact match “Virtus Security are a professional security systems installer with over 20 years of experience within the industry, specialising in the We pride ourselves on the quality of our…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 9 | 7 contacts → | ||||
Exact match “Security Installation Services Ltd provide a fast and efficient security service across Greater London and North Kent that includes the installation and maintenance of a wide…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 10 | 4 contacts → | ||||
Exact match “We provide CCTV, alarm systems, access control and fire safety solutions for residential and commercial properties across London.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 11 | 4 contacts → | ||||
Exact match “We provide a comprehensive range of services in Intruder Alarms, Fire Alarms, CCTV, Access Control and much more!” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 12 | 3 contacts → | ||||
Exact match “We design and install the latest technology in security cameras, access control, sensors and panic alarms.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 13 | 3 contacts → | ||||
Exact match “Do you want to access your security systems at home or remotely?” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 14 | 3 contacts → | ||||
Exact match “Bison Security delivers smart, rapid-deployment security systems tailored for construction sites, commercial premises, infrastructure projects, and high-risk environments across…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 15 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 16 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “prison security system providers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 16 of 74 prison security system providers based in London, United Kingdom
See the full list, filter by size, metro and specialty, and access 91 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Prison security system providers based in London, United Kingdom at a glance
As of Sep 13, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 15.0dCompany record updated
Median 78.0dHow this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with London, United Kingdom whose business descriptions match “prison security system providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 91 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 13, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “prison security system providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many prison security system providers are there based in London, United Kingdom?
RevenueBase identified 74 company matches for prison security system providers associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
WLS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United Kingdom has the most prison security system providers?
London leads the United Kingdom with 74 company records, followed by Manchester (10) and Birmingham (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 91 professional contacts with verified work emails tracked across these 74 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 13, 2026.
Ready to reach these companies? Verified emails and direct dials for all 74 prison security system providers based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Prison security system providers by geography
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- Prison security system providers based in Italy
- Prison security system providers based in Australia
- Prison security system providers based in the Netherlands
- Prison security system providers based in Canada
- Prison security system providers based in Germany
- Prison security system providers based in Spain
- Prison security system providers based in South Africa
- Prison security system providers based in Argentina
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
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- Lists A-Z
- New lists
- Prison security system providers based in the United States
- Prison security system providers based in the United Kingdom
- Prison security system providers based in Brazil
- Prison security system providers based in France
- Prison security system providers based in Italy
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Company intelligence · public preview
Top 16 prison security system providers based in London, United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 74 matching company records for prison security system providers based in London, United Kingdom, with 462 tracked contacts and 91 verified work emails.
This public preview shows 16 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 16 prison security system providers based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  WLSwestlondonsecurity.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 61 contacts → |
“WLS (West London Security) has been providing security and solutions to London's homes and businesses for over 40 years.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Custom Intelligent Securitycustomsecurity.tvHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 51 contacts → |
“Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Definitive Security Solutions LTDdefinitivesecuritysolutions.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“Definitive Security Solutions are an established designer, installer and maintainer of security, CCTV, intruder alarms, access control, power and data, and fire detection systems.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Guarding Professionals LTDguardingprofessionals.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Guarding Professionals is a customer focused security services company providing cost effective advanced security solutions using technical excellence and superior customer…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  LDN Security Solutions Limitedldnsecuritysolutions.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“London-based security company specialising in the design, installation, service and maintenance of single domestic, multi-occupancy residential and commercial security systems.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Delta Security 1962 LTDdeltasecurity.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Our goal is so simple we can sum it up in one word - quality.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Pacific Business Solutions LTDpacific-solutions.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“We take your security seriously and ensure that you and your property are safe and in secure hands.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Virtusvirtussecurity.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Virtus Security are a professional security systems installer with over 20 years of experience within the industry, specialising in the We pride ourselves on the quality of our…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Security Installation Services LTDsissecurity.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Security Installation Services Ltd provide a fast and efficient security service across Greater London and North Kent that includes the installation and maintenance of a wide…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Ge4orce Fire & Security Solutionsge4orce.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“We provide CCTV, alarm systems, access control and fire safety solutions for residential and commercial properties across London.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Prime Fire & Securityprimefiresecurity.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“We provide a comprehensive range of services in Intruder Alarms, Fire Alarms, CCTV, Access Control and much more!” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Tellivuetellivue.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“We design and install the latest technology in security cameras, access control, sensors and panic alarms.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  ELITEelite-security.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Do you want to access your security systems at home or remotely?” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Bison Securitybisonsecurity.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Bison Security delivers smart, rapid-deployment security systems tailored for construction sites, commercial premises, infrastructure projects, and high-risk environments across…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Welwyn Garden Alarms LTDwelwyngardenalarms.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Securebase Limitedsecurebase.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 16 of 74 company matches
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Prison security system providers: dataset insights
September 13, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
73 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 15.0dCompany record updated
Median 78.0dHow this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for prison security system providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many prison security system providers did RevenueBase find based in London, United Kingdom?
The saved snapshot records 74 matching company records, 462 tracked contacts and 91 verified emails. The public preview displays 16 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Prison security system providers by geography
- Prison security system providers based in the United States
- Prison security system providers based in the United Kingdom
- Prison security system providers based in Brazil
- Prison security system providers based in France
- Prison security system providers based in Italy
- Prison security system providers based in Australia
- Prison security system providers based in the Netherlands
- Prison security system providers based in Canada
- Prison security system providers based in Germany
- Prison security system providers based in Spain
- Prison security system providers based in South Africa
- Prison security system providers based in Argentina
Cite this list
RevenueBase Data Team. Top 16 prison security system providers based in London, United Kingdom. Snapshot: September 13, 2026. https://revenuebase.ai/companies/prison-security-system-providers/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Prison security system providers based in the United States
- Prison security system providers based in the United Kingdom
- Prison security system providers based in Brazil
- Prison security system providers based in France
- Prison security system providers based in Italy
- Prison security system providers based in Australia
Company intelligence · public preview
Top 16 prison security system providers based in London, United Kingdom
RevenueBase records 74 matching company records for prison security system providers based in London, United Kingdom, with 462 tracked contacts and 91 verified work emails.
This public preview shows 16 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 16 prison security system providers based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | WLSwestlondonsecurity.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 61 contacts → |
“WLS (West London Security) has been providing security and solutions to London's homes and businesses for over 40 years.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Custom Intelligent Securitycustomsecurity.tv HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 51 contacts → |
“Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Definitive Security Solutions LTDdefinitivesecuritysolutions.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“Definitive Security Solutions are an established designer, installer and maintainer of security, CCTV, intruder alarms, access control, power and data, and fire detection systems.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Guarding Professionals LTDguardingprofessionals.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Guarding Professionals is a customer focused security services company providing cost effective advanced security solutions using technical excellence and superior customer…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | LDN Security Solutions Limitedldnsecuritysolutions.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“London-based security company specialising in the design, installation, service and maintenance of single domestic, multi-occupancy residential and commercial security systems.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Delta Security 1962 LTDdeltasecurity.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Our goal is so simple we can sum it up in one word - quality.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Pacific Business Solutions LTDpacific-solutions.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“We take your security seriously and ensure that you and your property are safe and in secure hands.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Virtusvirtussecurity.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Virtus Security are a professional security systems installer with over 20 years of experience within the industry, specialising in the We pride ourselves on the quality of our…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Security Installation Services LTDsissecurity.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Security Installation Services Ltd provide a fast and efficient security service across Greater London and North Kent that includes the installation and maintenance of a wide…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Ge4orce Fire & Security Solutionsge4orce.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“We provide CCTV, alarm systems, access control and fire safety solutions for residential and commercial properties across London.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Prime Fire & Securityprimefiresecurity.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“We provide a comprehensive range of services in Intruder Alarms, Fire Alarms, CCTV, Access Control and much more!” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Tellivuetellivue.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“We design and install the latest technology in security cameras, access control, sensors and panic alarms.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ELITEelite-security.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Do you want to access your security systems at home or remotely?” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Bison Securitybisonsecurity.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Bison Security delivers smart, rapid-deployment security systems tailored for construction sites, commercial premises, infrastructure projects, and high-risk environments across…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Welwyn Garden Alarms LTDwelwyngardenalarms.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Securebase Limitedsecurebase.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 16 of 74 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
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Prison security system providers: dataset insights
September 13, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
73 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 15.0dCompany record updated
Median 78.0dHow this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for prison security system providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many prison security system providers did RevenueBase find based in London, United Kingdom?
The saved snapshot records 74 matching company records, 462 tracked contacts and 91 verified emails. The public preview displays 16 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 16 prison security system providers based in London, United Kingdom. Snapshot: September 13, 2026. https://revenuebase.ai/companies/prison-security-system-providers/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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